Floor drain strainer



FIG. 1 is a top plan view of a floor drain strainer showing our new design;

FIG. 2 is a bottom plan view thereof;

FIG. 3 is a side elevational view thereof, the opposite side being the same as the side shown;

FIG. 4 is an end elevational view thereof, the opposite end being the same as the end shown. 

The ornamental design for a floor drain strainer, as show and described. 